如何在PHP循环中加快单个查询的速度？

Question

I try to create an stock web app by php.

There is an stock list (about 2,000 stocks), each stock with an specified ID.

Then I set an loop to fetch the latest price from other site by function file_get_contents

Here is the pseudo-code,

<?php
$stock_arr=Array();
//get stock ID list from my database then fill the $stock_arr array.
for($i=0;$i<count(stock_arr);$i++){

    $cur_id=stock_arr[$i];
    $url="http://example.com/r=".$cur_id;
    $json=file_get_contens($url);
    updateprice($json,$cur_id);

}

I had set an simple timer,and found each query spends about 0.3 seconds.

For 2,000 stocks,it`s about 6~8 mins. And I dont think it is acceptable.

Since the query and update of each stock were not related. I thought there might be better algorithm.

Could someone give me some hint to speed up the process?Thanks.

Answer 1

搜索“ curl multi example php”，您可以在此处找到类似的功能http://kahthong.com/2012/04/php-parallel-curl-request-curlmultiexec-and-curlmultigetcontent